Elastic Superhydrophobic and Photocatalytic Active Films Used as Blood Repellent Dressing

Abstract

Durable and biocompatible superhydrophobic surfaces are of significant potential use in biomedical applications. Here, a nonfluorinated, elastic, superhydrophobic film that can be used for medical wound dressings to enhance their hemostasis function is introduced. The film is formed by titanium dioxide nanoparticles, which are chemically crosslinked in a poly(dimethylsiloxane) (PDMS) matrix. The PDMS crosslinks result in large strain elasticity of the film, so that it conforms to deformations of the substrate. The photocatalytic activity of the titanium dioxide provides surfaces with both self‐cleaning and antibacterial properties. Facile coating of conventional wound dressings is demonstrated with this composite film and then resulting improvement for hemostasis. High gas permeability and water repellency of the film will provide additional benefit for medical applications.

Improving Efficiency and Stability of Carbon‐Based Perovskite Solar Cells by a Multifunctional Triple‐Layer System: Antireflective, UV‐Protective, Superhydrophobic, and Self‐Cleaning

“…The photocatalytic degradation of various pollutants with superhydrophobic PDMS‐grafted TiO 2 was thoroughly investigated by Butt and coworkers. [ 41–43 ]…”

“…The photocatalytic degradation of various pollutants with superhydrophobic PDMS-grafted TiO 2 was thoroughly investigated by Butt and coworkers. [41][42][43] The UV-vis spectra of FTO (7 Ω sq À1 ) substrates without and with MTLC on the glass side are compared in Figure 1a. The visible light transmission of the FTO glass was significantly improved by applying the MTLC due to the antireflective property of the MTLC.…”

Review of interface tailoring techniques and applications to improve insulation performance

“…For instance, Lu et al and Cao et al developed a universal 'paint + spray adhesive' strategy to fabricate superhydrophobic coatings that is applicable to various polymers and microscale/ nanoscale fillers [17,18]. Superhydrophobic coatings using binding polymers such as epoxy [75,76], thermoplastic elastomer [77,78], PDMS [79] and supramolecular silicone polymer [80] as well as fillers such as TiO 2 [79,81], silica [75,76] and carbon nanotubes [77] have been reported. We have fabricated a multifunctional coating by spraying ZnO particles and CNTs dispersed in a PDMS matrix that endowed various dielectric materials with the multifunctionality of high DC flashover strength, a superhydrophobic surface, and self-cleaning capability [117].…”

Bioinspired Surface with Superwettability for Controllable Liquid Dynamics

“…Revealing the mechanisms behind these natural occurrences not only helps to solve the annoying problems of liquid overflow and splashing events that occur in daily life [ 12–14 ] but also inspires the innovative applications, such as agricultural irrigation, pesticide sprays, fog collection, lubrication, printing, microfluidic operation, soft robotics, oil–water separation, seawater desalination, biomedicine, microreactor, self‐assembly, and energy conversion. [ 2,15–31 ]…”